F02F CYLINDERS, PISTONS OR CASINGS, FOR COMBUSTION ENGINES; ARRANGEMENTS OF SEALINGS IN COMBUSTION ENGINES
Introduced: September 1968
Description
This subclass covers the structural components and sealing systems of internal and external combustion engines, including cylinder design, piston construction, engine casings, and their manufacturing methods. It encompasses cylinder liners, piston rings, piston skirts, engine blocks, cylinder heads, and integrated sealing arrangements such as gaskets and dynamic seals. The classification includes innovations in material selection, surface treatments, geometric optimization, and assembly techniques for these components, as well as combined designs integrating multiple structural and sealing functions.
Title
Titles differ between systems:
IPC: CYLINDERS, PISTONS, OR CASINGS FOR COMBUSTION ENGINES; ARRANGEMENTS OF SEALINGS IN COMBUSTION ENGINES
CPC: CYLINDERS, PISTONS OR CASINGS, FOR COMBUSTION ENGINES; ARRANGEMENTS OF SEALINGS IN COMBUSTION ENGINES
Full Title
Full titles differ between systems:
CYLINDERS, PISTONS, OR CASINGS FOR COMBUSTION ENGINES; ARRANGEMENTS OF SEALINGS IN COMBUSTION ENGINES
CYLINDERS, PISTONS OR CASINGS, FOR COMBUSTION ENGINES; ARRANGEMENTS OF SEALINGS IN COMBUSTION ENGINES
Of 6 combined children, 5 exist in both systems.
1 codes are CPC-only extensions.
Note: 1 CPC extensions are marked as secondary classification only.
Child Classifications
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